1 package antlr;
2
3 * <b>SOFTWARE RIGHTS</b>
5 * <p>
6 * ANTLR 2.5.0 MageLang Institute, 1998
7 * <p>
8 * We reserve no legal rights to the ANTLR--it is fully in the
9 * public domain. An individual or company may do whatever
10 * they wish with source code distributed with ANTLR or the
11 * code generated by ANTLR, including the incorporation of
12 * ANTLR, or its output, into commerical software.
13 * <p>
14 * We encourage users to develop software with ANTLR. However,
15 * we do ask that credit is given to us for developing
16 * ANTLR. By "credit", we mean that if you use ANTLR or
17 * incorporate any source code into one of your programs
18 * (commercial product, research project, or otherwise) that
19 * you acknowledge this fact somewhere in the documentation,
20 * research report, etc... If you like ANTLR and have
21 * developed a nice tool with the output, please mention that
22 * you developed it using ANTLR. In addition, we ask that the
23 * headers remain intact in our source code. As long as these
24 * guidelines are kept, we expect to continue enhancing this
25 * system and expect to make other tools available as they are
26 * completed.
27 * <p>
28 * The ANTLR gang:
29 * @version ANTLR 2.5.0 MageLang Institute, 1998
30 * @author Terence Parr, <a href=http://www.MageLang.com>MageLang Institute</a>
31 * @author <br>John Lilley, <a href=http://www.Empathy.com>Empathy Software</a>
32 */
33
34 import antlr.collections.AST;
35
36 public class NoViableAltException extends ParserException {
37 public Token token;
38 public AST node;
40 public NoViableAltException(AST t) {
41 super("NoViableAlt");
42 node = t;
43 }
44 public NoViableAltException(Token t) {
45 super("NoViableAlt");
46 token = t;
47 line = t.getLine();
48 }
49 public String toString() {
50 if ( token!=null ) {
51 return "line("+token.getLine()+"), unexpected token: "+token.getText();
52 }
53 if ( node==TreeParser.ASTNULL ) {
55 return "unexpected end of subtree";
56 }
57 return "unexpected AST node: "+node.toString();
58 }
59 }
60